Cast on Ignite + Flamewall interaction working as intented? Potential bug?

I see a lot of people playing some form of CoI + Big spell like comet.

They all use Flamewall to trigger a huge amount of energy generation. But reading the description of Cast on Ignite it should not work like it does. Currently every enemy that walks into the flamewall counts, even the skill says "once per skill use".

Also CoI says it requires a "hit" to trigger. Flamewall does not hit.


Can you please confirm if the ineraction is working as intended? Thanks.